Scanner for space measurement

Abstract

Some embodiments of the invention relate to a surveying apparatus in the form of a scanner comprising a beam deflection unit, such a beam deflection unit and a measuring method to be carried out with said surveying apparatus. The surveying apparatus comprises a radiation source for generating measurement radiation and a detector for receiving reflected measurement radiation, called reflection radiation for short, which was reflected at an object of interest, wherein measurement radiation and reflection radiation have substantially the same optical path. Situated in said optical path there is a beam deflection unit mounted rotatably about a rotation axis and serving for adjustably aligning the measurement radiation and for capturing the reflected radiation

Description

technical field [0001] The invention relates to a measuring device, in particular realized in the form of a scanning device, in order to generate to scale a three-dimensional image of a measuring object of interest. Background technique [0002] Measuring devices or scanning devices of the type mentioned at the outset are designed for the three-dimensional measurement of spatial regions and / or objects. Typical application examples are the surveying of interior spaces such as churches and workshops, the surveying of large objects such as buildings or aircraft, or forensic surveys of accident scenes. [0003] When measuring these objects, the laser beam of the laser scanning device can be used to scan a predetermined space volume and detect the laser light reflected by the object, wherein the emitted laser beam and the direction of the detected laser light are collected at each moment angle information. The distance between a certain surface point in the volume of space and ...

AI Technical Summary

Problems solved by technology

The arrangement of the panoramic camera outside the beam deflection unit has various disadvantages: on the one hand, two cameras and two beam paths must be provided for the field of view of the cameras, and on the other hand, positioning the panoramic camera outside the beam deflection unit would Causes severe unbalances and bending moments on the beam deflection unit, for which corresponding countermeasures have to be taken, which incurs additional costs and makes the system susceptible to disturbances when working in the field

[0010] Although it is possible, as disclosed in patent documents DE 10 2010 105 027 A1 and patent document EP 2 620 746 A1, by a camera rotating together with the beam deflection unit, the problems caused by the fixed field of view of the camera with respect to the position in conventional on-axis cameras can be solved. Rotational image issue with camera sensor rotation, but users still can't live-cam

Calibrating such equipment is also time consuming and must be calibrated by the manufacturer

Almost impossible to recalibrate on the spot

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